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Corrected shadow mapping and added experimental self-shadowing

master
Tomasz Kapuściński 2015-06-01 17:22:49 +02:00
parent a0c56f54cb
commit d112971c3e
1 changed files with 17 additions and 9 deletions
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26
src/graphics/engine/engine.cpp
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@ -3310,7 +3310,8 @@ void CEngine::Draw3DScene()
}
}
UseShadowMapping(false);
if (!m_qualityShadows)
UseShadowMapping(false);
// Draws the shadows , if shadows enabled
if (m_shadowVisible)
@ -3564,6 +3565,8 @@ void CEngine::RenderShadowMap()
m_device->SetRenderState(RENDER_STATE_ALPHA_TEST, true);
m_device->SetRenderState(RENDER_STATE_DEPTH_BIAS, false);
m_device->SetAlphaTestFunc(COMP_FUNC_GREATER, 0.5f);
m_device->SetRenderState(RENDER_STATE_DEPTH_BIAS, true);
m_device->SetDepthBias(2.0f, 4.0f);
m_device->SetViewport(0, 0, m_shadowMap.size.x, m_shadowMap.size.y);
@ -3578,29 +3581,34 @@ void CEngine::RenderShadowMap()
lightOffset.Normalize();
float scale = log(m_shadowMap.size.x) / log(2.0f) - 6.5f;
float dist = 100.0f * scale;
float dist = 75.0f * scale;
float depth = 2000.0f;
Math::Vector pos = m_lookatPt;// +0.25f * dist * dir;// +0.25f * dist * lightOffset;
Math::Vector lightPos = m_lookatPt + Math::Vector(0.0f, -200.0f, 0.0f);
pos.x = round(pos.x);
pos.y = round(pos.y);
pos.z = round(pos.z);
Math::Vector lightPos = pos + Math::Vector(0.0f, -200.0f, 0.0f);
Math::Vector lookAt = lightPos - lightDir;
Math::LoadOrthoProjectionMatrix(m_shadowProjMat, -dist, dist, -dist, dist, -depth, depth);
Math::LoadViewMatrix(m_shadowViewMat, lightPos, lookAt, worldUp);
Math::Matrix scaleMat;
Math::LoadScaleMatrix(scaleMat, Math::Vector(1.0f, 1.0f, -1.0f));
m_shadowViewMat = Math::MultiplyMatrices(scaleMat, m_shadowViewMat);
Math::Matrix temporary = Math::MultiplyMatrices(m_shadowProjMat, m_shadowViewMat);
m_shadowTextureMat = Math::MultiplyMatrices(m_shadowBias, temporary);
m_shadowViewMat = Math::MultiplyMatrices(scaleMat, m_shadowViewMat);
m_device->SetTransform(TRANSFORM_PROJECTION, m_shadowProjMat);
m_device->SetTransform(TRANSFORM_VIEW, m_shadowViewMat);
Math::Matrix scaleMat;
Math::LoadScaleMatrix(scaleMat, Math::Vector(1.0f, 1.0f, -1.0f));
m_shadowViewMat = Math::MultiplyMatrices(scaleMat, m_shadowViewMat);
m_device->SetTexture(0, 0);
m_device->SetTexture(1, 0);
@ -3649,7 +3657,7 @@ void CEngine::RenderShadowMap()
}
m_device->SetRenderState(RENDER_STATE_DEPTH_BIAS, false);
m_device->SetDepthBias(1.0f, 0.0f);
m_device->SetDepthBias(0.0f, 0.0f);
m_device->SetRenderState(RENDER_STATE_ALPHA_TEST, false);
if (m_offscreenShadowRendering) // shadow map texture already have depth information, just unbind it